'Parenthood' Jason Ritter commits to potential fourth season

Parenthood star Jason Ritter has promised to remain on the show if it is renewed for a fourth season.

The actor said that his recruitment to medical drama pilot County does not spell the end of his character Mark Cyr's relationship with Sarah Braverman (Lauren Graham).

"People are going, 'Oh God, it's going to break them up'," he told The Insider. "I think the characters are so far in that relationship that you can't just end it abruptly, especially when I've just asked her to marry me.

"It's not as if County is a one-guy show - it's about all six of us - so I'll have time to run back and forth. So we'll see what happens.

"Whatever they choose, it's going to make me weepy when I watch it."

Parenthood, which concluded its third season in February, is yet to be renewed by NBC, even though the network has already picked up the likes of Smash and Grimm.